Purifying combustible gases containing carbon monoxide

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: CHEMISTRY; METALLURGY
Class:: PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
Subclass:: PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE

Filing statistics

IPC C10K 1/00 belongs to the parent subclass C10K, which recorded 11,196 patent applications worldwide between 2013 and 2023. Annual filings grew from 899 in 2013 to 1,213 in 2023 (+35%), peaking at 1,333 applications in 2021. The most active applicants in class C10 are SINOPEC (CHINA PETROCHEMICAL CORPORATION) (8,875 applications), SAUDI ARABIAN OIL COMPANY (2,245 applications) and PETROCHINA COMPANY (2,028 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

purifying GAS(ES) containing CO

6 direct subcodes

Child Classifications

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C10K 1/02 Dust removal
C10K 1/04 by cooling to condense non-gaseous materials
C10K 1/08 by washing with liquids; Reviving the used wash liquors
C10K 1/2 by treating with solids; Regenerating spent purifying masses
C10K 1/32 with selectively absorptive solids, e.g. active carbon
C10K 1/34 by catalytic conversion of impurities to more readily removable materials

Top Applicants

Top 10 applicants by patent filingsfor class C10, 2013–2023, worldwide · Source: EPO PATSTAT

SINOPEC (CHINA PETROCHEMICAL CORPORATION) 8,875
SAUDI ARABIAN OIL COMPANY SA 2,245
PETROCHINA COMPANY 2,028
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY US 1,980
IFPEN (IFP ENERGIES NOUVELLES) FR 1,963
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NL 1,878
CHINESE ACADEMY OF SCIENCES 1,829
UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 1,787
LUBRIZOL CORPORATION US 1,277
BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,268